Russia's Federal Security Service (FSB) blocked an attempt by Ukraine to organise the hijacking of a Russian Tu-22M3 strategic bomber and fly it to Ukraine, the FSB said on Monday.
"Ukrainian intelligence intended to recruit a Russian military pilot for a monetary reward and the provision of Italian citizenship, to persuade him to fly and land a missile carrier in Ukraine," the FSB, the main successor to the Soviet-era KGB, said on its website.
Reuters could not independently verify the details. Ukraine's Security Service (SBU) has not immediately responded to Reuters' request for a comment.
During the operation, Russia received information that helped its forces to strike the Ozerne airfield in northwestern Ukraine, the FSB added in its statement.
The timings of the operation and the alleged strikes on the Ozerne airfield in Ukraine's Zhytomyr were both unclear.
The Zhytomyr region was under air raid alerts in the early hours on Monday. Unofficial reports on social media, including on the Telegram messaging app which is heavily used by officials and military in both countries for disseminating information, said there were explosions in Zhytomyr.
A Russian attack on Ukraine's southern Odesa region killed two people and injured three overnight, Ukraine's emergency service and a government official said on Monday.
Former Philippine President Rodrigo Duterte was "pivotal" in the murder of thousands of people during his rule, prosecutors at the International Criminal Court (ICC) said on Monday, as they pushed for his trial to go ahead.
Children across parts of the US Northeast will stay home on Monday as a powerful winter storm forced school closures and pushed offices and transit systems onto emergency schedules, with officials across the region warning of dangerous travel conditions.
A passenger bus plunged 200 metres (650 feet) from a mountainous road in west Nepal before dawn on Monday, killing 19 people including three foreign nationals.
Human rights are under assault worldwide, the United Nations chief warned on Monday, citing widespread abuses of international law and devastating civilian suffering in conflicts in Sudan, Gaza and Ukraine.